Precision CNC Machined from 6061-T6 Aluminum and Finished in a Matte Black Anodization Lightening Cuts Reduce Overall Weight Without Compromising Durability All Sharp Edges and Corners Removed and Radiused Quick Release (QR) Mount Features Tool-free Tension Adjustment, Locking Quick Release Lever, and Squared Recoil Stops for a Secure Zero Hold and Return to Zero 20mm Saddle Height, 32.7mm Center Height, Fits 1" Tube Optics with an Objective Outer Diameter up to 65mm NOTE: Leapers, Inc. recommends tightening the ring top screws with a torque value of 25 inch-lb.